The kickass is the favorite bridge for my modster of choiceI like your Attitude Special, and you've done all the things needed to make it a proper Attitude Bass, nice job.
I also like the color.
Yes, your bridge looks like what I need for a direct drop in replacement, I don't think they are available though.
I will eventually stop whining and pull the bridge, fill the mounting holes, buy a Hipshot Kickass Bridge, and mount it.
Yet not mine
If you like badass, there's the "omega bass", in both versions of the ex quann "II" (no groove or multi grooves)... or, in my case, better would be the gotoh 404j. Both bridges align 5 bolts like on fender's stock bridges, thus requirin' to fill the four yamaha holes to drill the five solid spaces around'em
Now you can think about... hipshot kickass/parts planet omega bass/gotoh 404j
Hope this helps
Cheers,
Wallace